
package de.unihannover.se.restlab.microblog.providers;

import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;

import de.unihannover.se.restlab.microblog.models.User;

@Provider
@Produces(MediaType.TEXT_PLAIN)
public class PlainUserWriter implements MessageBodyWriter<User> {

	@Override
	public long getSize (User t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
		return -1;
	}

	@Override
	public boolean isWriteable (Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
		return (type.equals(User.class));
	}

	@Override
	public void writeTo (User t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType,
		MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {

		entityStream.write((t.getId() + " - " + t.getCreatedAt() + ": " + t.getName() + "\n").getBytes());

	}

}
